python从入门到实践外星人大战已研究两天有余。。求大神

2017-09-20 11:30:14 1.6k 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

python外星人入侵游戏本文内容是使用pygame包来开发一款python2D游戏，类似于我们小时候玩的飞机大战，飞船发射子弹biubiubiu~~然后外星人就消灭了，并且每消灭一群外星人后，玩家都将提高一个等级，随着等级提高游戏节奏也会加快。下面是本文的结构：规划项目安装pygame飞船与外星人的创建外星人与飞船的战争添加记分牌详细代码可见我的github，以下内容只是大致介绍，篇幅有限只放了部分，细节之处可以阅读书籍... 阅读详情

问题是这样子的左右移动正常只要一按下space就报错 AttributeError: 'pygame.Surface' object has no attribute 'rect'

不太懂请大神鉴别以下是代码

settings.py

class Settings():

def __init__(self):
self.screen_width = 1200
self.screen_height = 600
self.bg_color = (230,230,230)
self.ship_speed = 1.5
self.bullet_speed = 1
self.bullet_width = 3
self.bullet_height = 15
self.bullet_color = 60,60,60

ship.py

import pygame

class Ship():
def __init__(self,ai_settings,screen):

"""初始化飞船并设置其初始位置"""
self.screen = screen
self.ai_settings = ai_settings
self.image = pygame.image.load('images/ship.bmp')
self.rect = self.image.get_rect()
self.screen_rect = screen.get_rect()

self.rect.centerx = self.screen_rect.centerx
self.rect.bottom = self.screen_rect.bottom

# 在飞船的属性center中存储小数值
self.center = float(self.rect.centerx)

self.moving_right = False
self.moving_left = False

def update(self):

"""根据移动标志来调整飞船的位置"""

# 更新飞船的center值,而不是rect
if self.moving_right and self.rect.right < self.screen_rect.right:
self.center += self.ai_settings.ship_speed
if self.moving_left and self.rect.left > 0:
self.center -= self.ai_settings.ship_speed

# 根据self.center来更新rect对象
self.rect.centerx = self.center

def blitme(self):
self.screen.blit(self.image,self.rect)

bullet.py

import pygame

from settings import Settings

from pygame.sprite import Sprite

class Bullet(Sprite):

"""一个对飞船发射的子弹进行管理的类"""
def __init__(self,ai_settings,screen,ship):

"""在飞船所处的位置创建一个子弹对象"""
super().__init__()
self.screen = screen

# 在(0,0)处创建一个表示子弹的矩形，再设置正确的位置
self.rect = pygame.Rect(0,0,ai_settings.bullet_width,ai_settings.bullet_height)
self.rect.centerx = ship.rect.centerx
self.rect.top = ship.rect.top

#存储用小数表示的子弹位置
self.y = float(self.rect.y)

self.color = ai_settings.bullet_color

def update(self):

"""向上移动子弹"""

# 更新表示子弹位置的小数值
self.y -= self.ai_settings.bullet_speed

# 更新表示子弹的rect的位置
self.rect.y = self.y

def draw_bullet(self):

"""在屏幕上绘制子弹"""
pygame.draw.rect(self.screen,self.color,self.rect)

game_functions.py

import sys
import pygame
from settings import Settings
from ship import Ship
from bullet import Bullet

def check_keydown_events(event,ai_settings,screen,ship,bullets):

"""响应按键"""
if event.key == pygame.K_RIGHT:
ship.moving_right = True

elif event.key == pygame.K_LEFT:
ship.moving_left = True

elif event.key == pygame.K_SPACE:

# 创建一颗子弹，并将其加入到编组bullets中
new_bullet = Bullet(ai_settings,ship,screen)
bullets.add(new_bullet)

def check_keyup_events(event,ai_settings,screen,ship,bullets):

"""响应松开"""
if event.key == pygame.K_LEFT:
ship.moving_left = False

elif event.key == pygame.K_RIGHT:
ship.moving_right = False

def check_events(ai_settings,screen,ship,bullets):

for event in pygame.event.get():

if event.type == pygame.QUIT:
sys.exit()

elif event.type == pygame.KEYDOWN:
check_keydown_events(event,ai_settings,screen,ship,bullets)

elif event.type == pygame.KEYUP:
check_keyup_events(event,ai_settings,screen,ship,bullets)

def update_screen(ai_settings,screen,ship,bullets):

# 在飞船和外星人后面重绘所有子弹
for bullet in bullets.sprites():
bullet.draw_bullet()

screen.fill(ai_settings.bg_color)
ship.blitme()
pygame.display.flip()

alien_invasion.py

import sys

import pygame

import game_functions

from pygame.sprite import Group

from settings import Settings

from ship import Ship

from bullet import Bullet

def run_game():

pygame.init()
ai_settings = Settings()
screen = pygame.display.set_mode((ai_settings.screen_width,ai_settings.screen_height))
pygame.display.set_caption("Alien Invasion")

ship = Ship(ai_settings,screen)

#创建一个用于存储子弹的编组
bullets = Group()

while True:
game_functions.check_events(ai_settings,screen,ship,bullets)

ship.update()

bullets.update()

game_functions.update_screen(ai_settings,screen,ship,bullets)

run_game()

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